Los Angeles imports roughly 85 percent of its water from the Colorado River and Northern California via the Los Angeles Aqueduct and Colorado River Aqueduct. This water travels 200 to 400 miles through concrete channels and steel pipes, dissolving minerals along the way. By the time it reaches residential pipes, the water contains 200 to 400 parts per million of total dissolved solids, primarily calcium carbonate and magnesium. This mineral concentration classifies Los Angeles water as moderately hard to hard. Homes in neighborhoods served by different treatment plants experience varying levels of hardness, but almost all areas deal with some degree of limescale accumulation in plumbing over time.
Los Angeles plumbers see sediment problems daily because the city's aging housing stock and mineral-rich water create perfect conditions for pipe calcification. We've worked on homes throughout Silver Lake, Mar Vista, and South Los Angeles where original galvanized pipes from the 1940s and 1950s are nearly sealed shut with scale. Local expertise matters because older Los Angeles homes have unique plumbing configurations that require careful handling during hydro-jetting. We know how to access cleanouts in post-war tract homes and how to work around the limitations of pre-1960s plumbing without causing damage.